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Question P2 Decimals and percentages

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choose a measurement unit

Choose the suitable abbreviation for a pencil’s length: cm or km?

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Answer

cm

About this method

Decimals and percentages

Keep place values and the whole visible while scaling decimals or finding a percentage.

In this one. A unit must match both the attribute and the size being measured.

35% means 35 out of 100whole35% of 200 = 70

How to spot it

The question offers two possible units for the same kind of measurement, such as cm or km, or asks to read a time or a percentage from a picture.

Common mistake

Children pick the unit that sounds familiar rather than the one that fits the object's size, or read a clock's hour and minute hands the wrong way round.

Practise a similar question

Standard Choose the suitable abbreviation for a child’s mass: kg or mL?
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